Andrew Williams, MD
NPI 1548505142 · Cardiovascular Disease Physician · Mesa, AZ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Andrew Williams, MD is a Cardiovascular Disease Physician provider in Mesa, AZ (NPI 1548505142).
Provider details
- NPI number
- 1548505142
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 53167 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
4,094 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 1,290 | $14 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,206 | $124 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 258 | $76 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 198 | $186 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 154 | $87 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 34 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 369 | 164 |
| Metoprolol Succinate | 223 | 85 |
| Apixabanbrand: Eliquis | 177 | 57 |
| Amlodipine Besylate | 167 | 69 |
| Losartan Potassium | 163 | 67 |
| Metoprolol Tartrate | 155 | 70 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$267 across 13 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-12-07
- Last updated
- 2025-06-25
- Certified
- 2025-06-25
Frequently asked questions
- What is Andrew Williams's NPI number?
- Andrew Williams's National Provider Identifier (NPI) is 1548505142, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Andrew Williams's specialty?
- Andrew Williams is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Andrew Williams located?
- Andrew Williams's practice location on file with NPPES is 6309 E Baywood Ave Ste 101, Mesa, AZ 85206-1726.
- What is Andrew Williams's phone number?
- The practice phone number listed in the NPPES registry for Andrew Williams is (480) 641-5400.
- Does Andrew Williams accept Medicare?
- Andrew Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Andrew Williams's NPI active?
- Yes — Andrew Williams's NPI (1548505142) is active in the NPPES registry as of the last update on 2025-06-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.